Publications by authors named "Andrew J Hayward"
Article Synopsis
- This study examined how nerve injuries affect brain activity, specifically looking at hyperexcitability in the primary somatosensory cortex (S1) using a pig model.
- Researchers recorded neuron activity with a multielectrode array to see how stimulating injured versus uninjured nerves changed brain responses.
- The findings indicated that following nerve injury, there was a significant increase in excitability, particularly in cortical layer III, highlighting its key role in brain activity changes post-injury.
Simultaneous contrast: evidence from licking microstructure and cross-solution comparisons.
J Exp Psychol Anim Behav Process
April 2011
Article Synopsis
- The study analyzed how rats' licking behavior changed based on different concentrations of sucrose solutions, using traditional and new testing methods.
- Results showed that when rats licked lower concentrations of sucrose alongside a higher concentration, they consumed more (positive contrast), while the opposite was true when consuming lower concentrations with lower ones (negative contrast).
- Additionally, changes in licking patterns, such as cluster size, correlated with the concentration of the sucrose solutions consumed, indicating that sensory mechanisms play a role in these contrast effects.
Article Synopsis
- The study investigated conditioned taste aversions (CTA) to saccharin using three different methods: lithium chloride, amphetamine, and wheel running, analyzing licking patterns to assess taste palatability.
- Pairing saccharin with amphetamine decreased its intake but did not alter licking behavior parameters (like cluster size or lick rate), suggesting no change in palatability.
- In contrast, pairing saccharin with lithium or wheel running not only reduced intake but also affected licking behavior, indicating that these conditions caused a perception of nausea associated with the taste, whereas amphetamine did not.